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fusion

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Answer a hard question by fanning it out to a PANEL of models running in parallel — each answering independently with web search and bash, none seeing the others' work — then having Opus 4.8 judge every response into a structured analysis (consensus, contradictions, partial coverage, unique insights, blind spots) and write a final answer grounded in it. The panel is two independent Opus 4.8 runs (slug opus4.8-4.8), Opus 4.8 + GPT-5.5 via codex (opus4.8-gpt5.5), Opus 4.8 + Gemini 3.1 Pro via agy (opus4.8-gemini3.1pro), or all three (opus4.8-gpt5.5-gemini3.1pro). Opus always judges and writes the final answer — the pipeline can't be reversed. Runs on local CLI subscriptions (no metered API), and saves a timestamped provenance .md per run. Use this whenever the user asks to "run it through Fusion", says /fusion, wants a multi-model / panel / ensemble answer, wants a question cross-checked across models, or wants a higher-confidence answer with consensus and blind spots surfaced — even if they don't say "fusion". General-purpose: any topic (research, law, strategy, technical, personal). Best for high-stakes research, design calls, and debugging where being confidently wrong is expensive.

skills/fusion/SKILL.md

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# Fusion

Fusion turns one prompt into a panel. The question goes to several models **at the same time**, each
answering independently — with web search and bash, and with no knowledge of the others. Then Opus 4.8
(this very session — the orchestrator) reads every answer, extracts the structure of the panel's reasoning
(what they agree on, where they conflict, what only one saw, what they all missed), and writes a final
answer grounded in that analysis.

The whole mechanism is **independence, then synthesis**. The diversity that makes a panel beat a single
model is harvested, not manufactured: running the same prompt independently yields different reasoning
paths, tool calls, and sources. So there are **no assigned "lenses" or personas** — every panelist gets the
user's task **verbatim** and answers it straight. (See `references/panel.md`.)

**One hard rule: Opus 4.8 always judges and writes the final answer — the pipeline can't be reversed.** The
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